Gas-engine.



G. A. BEAUDET.

GAS ENGINE. APPLICATION FILED J,ULY19,1907.

a SHBET$-$HBET 1.

mmsssss .MJVA ma ve ATTORNEY No 883,511. PATEITTED MAR. 31,1908.

G. A. BEAUDET.

GAS ENGINE. APPLIOATIOK Flynn J LY 19,1907.

3 SHEETSSHEBT 2.

PATENTED MAR. 31, 1908. G. A. BEAUDBT. GAS ENGINE. APPLICATION FILED JULY 19:1997.

3 SHEETS-SHEET 3.

mum/1275 I A TTURWEY UNITED STATES PATENT OFFICE.

GEORGE ADELARD BEAUDFT, OF SAN FRANCISCO, CAICIFORNIA.

GAS-ENGINE.

Spcification of Letters Patent.

Patented March 31, 1908.

Application at July 19, 1907. Serial No. 324,581.

T 0 all vhom it may concern:

Be it known that I, GEORGE ADELARD BEAUDET, a'cit zen of the United States, resident of the city and cou'n by of San Francisco and State of California,haveinvented new and useiul Improvements in Gas-Engines. :of which the following is a specification.

This invention relates to improvementsmade m two-cycle gas englnes or motors. of the type or description that-are employed at the present time for automobiles, and for other purposeswhere a high. speed motor is required. Y

The invention has for its objects chiefly to simplify the construction of the parts and ton and in the direction of its movement at the time of explosion.

Another object of the invention is to pro-.

vide a case or chamber of novel construction to contain and inclose. the crank; the same being formed in one piece without joints other than that which joins 0r unites the cylinder-body to the case; whereby the dangers arising from leaks at the joints are avoided and the case is readilydetached to give access to the cylinder and inclosed parts for cleaning or repairs.

These and other objects I attain in and by the construction and combination of parts illustrated in the accompanying draw lugs, and as explained at length in the follow ing specification, wherein my said invention .is described in detail with reference to the said drawings and in connection with other wellknown parts, and is afterward pointed out in the claims at the end of this specification.

The said drawings represent the principal parts of the cylinder and piston, and the crank-shaft and connections of a gas-engine I embodying my said invention; the other vention, as, for. examp parts necessary to produce the complete en gine or'motorbut forming no art of this ine, t 1e gas-sup ly pipes connecting the inlet-ports in the cy inder with the source of supply, and the ex haust conductors for carrying ofl' tl'iewaste products after every explosion; the means whereby the motion of the crank-shaft is ap plied to the part br machine to be driven;

'and the frame to support the engine being ,omitt d' from the several figures.

Fig re 1 of the drawing is a vertical section'taken diametrically through the cylinder, the piston and thecrank-caseof'an engine of my invention, the section being taken in a plane at right angles to the crank-shaft. Fig. 2 is a similar section, taken in a plane parallel with the crank-shaft. Fi 3 isahorizontal section, taken transversely through Fig. 2, on the line Fig. 4 1s a similar sectiontaken through 1 1 Fig. 2. Fig. 5

is a similar section taken on the line z2,

Fig. 2.

One feature of the present invention comprises an lexplosion-chamber 2 situated on the head of the cylinder at outside of, but connecting directly with, the cylinder space above the piston through a long and relatively narrow opening 3. Such opening is the full size of the cylinder-spacediametrically in one direction but in the direction at right angles thereto, or widthwise, it is of smaller dimens1ons, as from one side-wall 7, to the The opposite side-wall 8 of the chamber 2.

end-walls 5-.6 of the chamberQ are a con-' tinuation of the perpendicular sides of the cylinder-body, so that the inclosed space extends diametrically across thetop of the cylinder from one side to the other. This chamher 2 inclosed between these walls 56,

7-8, communicates directly with the cylinder-space through the narrow opening 3 in the bottom, ,and it has direct connection also with an exhaust through an opening in the top in which is fixed a T-coupling or union 12, pipe or conductor, as 14, from one side or the other. Such exhaust outlet is provided with a downwardly opening valve 15 fixed on the bottom of an upright stem 16, to the upper end of which is connected a valve-opcratlng means actuated from the engine-shaft.

The outlet in the bottom of the chamber 2 communicating with the cylinder-space above the piston, is controlled by an upwardly-acting gate comprising a plate 18 of for connecting and leading to an exhaustright.

the position of the cylinder is generally 11 Byconnecting the gate 18 with the exhaust outlet valve 15, by means ofa link 21, as shown in Figs. 1 and 2 the same means that acts on the exhaust-valve 15 will act on the gate 18 in such manner that when one is opened the other will be closed. In the means illustrated in the drawings, the outletvalves are operated through the medium of a face-cam 22 fast on the crank-shaft bb a rocking-lever 23 attached at one end 24 to the stem 16 of the valve, and at the end 25 on the opposite side of the ivot 27 having at tached to it a lifting-r0 28, on the foot of which is a roller 29 resting on the cam 22. A coiled-spring 30 interposed between a fixed collar 31 on the valve-stem and a stationaryguide fixed in the valve-opening, insures a close and even seating of the valve, by reason of the spring being placed around the valvestem and arranged to press upward against the collar.

The outlet valve and the gate are so timed in their movements with respect to the strokes of the piston d that the outlet valve is opened, and thechamber 2 is cut off from communication with the cylinder space between such chamber and the piston, before the ports are uncovered to admit the gas to thesaid part of the cylinder; and their positions are not reversed, that is to say, the outlet valve closed and the gate opened, until the said ports have been closed by the movement of the piston on its up stroke. The parts remain in the last described position until after the explosion takes lace, which occurs at the moment the cran passes the center.

The arrangement ofthe admission-ports 3233 in the side-walls of the cylinder promuch greater quantity of gasthan is required for the charge, is further increased in dimension by the chambers e e on the sides of the cylinder-body covering the admission-ports,

V and those ports 32-32 3333 are so arranged as to admit the gas into the cylinders ace both above and also below the piston. he positions of these ports are represented in Figs. 1 and 2.

The admission-ports 3232 and 34 34 provide for a full admission of gas to the cylinder-space in every chargin period under all conditions of speed; an also insure the proper quantity ofgas for afresh charge and to expel the burned gases remaining in the space above the piston after the explosion, and particularly when the engine is traveling at high speed.

As the piston in this engine forms the valve or controlling means for the admissionports, it is provided with openings 3536 in the sides below the piston-head, and also with openings 37-38 higher up, the latter being about on a level with the top of the piston-head.

The upper openings 3637 in the piston are closed in on the sides by wings or standing-plates {I041 fixed across the top of the .piston-head, and .extendin perpendicularly upward in such position t at the space inclosed between them is about the same width as the explosion-chamber 2 at the top of the cylinder. The function of these wings is to prevent the charge of gas at the moment of 1ts admission to the cylinder-s ace above the pistonas it enters throu h t e passages -6 and ports 3232 romspreading laterally and mixing with the waste-products that may remain in the lower part of the cylinder-space, after the explosion. These wings act, therefore, to direct the bulk of the entering charge of gas upwards towards the top of the cylinder ahead of the piston, and to shut in or confine such charge of as, or the bulk of it that it will pass into and be com ressed within the chamber 2 by the upstrol e of the piston. The length of such upstroke is-so regulated that the head of the piston will be brought almost upto the head of the'cylinder at the end of its stroke, and only sufficient room will exist for clearance. Every charge of gas taken in, is thus compressed and fired within the explosion-cham- Among the novel features of this invention the direct exhaust from .the chamber 2 provided through the outlet 12, in addition to the exhaust-ports 4243 lower down, is an important part of the invention, in that the same effect a complete and a rapid discharge and clearing outof the waste products from the upper end of the cylinder-space where the charge is fired, and also a direct outlet from the lower part of the cylinders'pace into which the dead gases or a portion of the waste-products is drawn by the descending piston after every explosion. The chamber 2 is acompression-chamber and an explosion-chamber for the fresh charge of gas or it is an exhaust-chamberfor the wasteproducts after the explosion, according as communication is established with the cylinder-space by opening the ate 18 and closing the valve 15, or as the chamber is shut o from the cylinder-space and opened to the exhaust. But while the main-exhaust is cut off from the cylinder-space after every explosion before the fresh charge of gas is adseam:

' mitted to the cylinder, the supplementingexhaust outlets 42-43 beingsituated in the lower part of the cylinder, are so arranged as to be uncovered during the moment thatthe charge of gas begins to pass into the cylinder above .the piston, and thereby afford a ready formed of two sections b,

outlet for the dead gases in the lower part of the cylinder.

Ample outlet and discharge for the wasteproducts from the lower part pf the cylinderspace as well as from the upper part are aii'orded. by providing two sets of exhaust ports 4:2-v-4z3, one diametrically opposite to the other A rapid chargingof th1s cylinder is also provided by the arrangement of the chambers e, e on opposite sides of the cylinder, as well as by connecting the crank-case with such supply-chambers and with the cylinder-space through the assages and ports, as herein beforedescribedl The crank shaft is my; esented as being b I suitably mounted in the crank case, and carrying at their inner ends' the crank arms bolt 47, which passes through abutting bosses,

end of the piston rod.

"advantageof being'easily set and secured in place on the shaft-sections bb through the carriedby thecrank arms and constituting the Wrist pin with which is connected one This crank has the l open top of the crankcase a before the latter is set and bolted in place on the cylinder,

In that operation the two crank-members are placed in positionand the piston-rod is" attached by" placing the bosses together after inserting them through the eye on the end of the pistomrod, and then inserting the bolts and lockingins as before described; this being done be pro the crank is drop ed into the crank-case c from above. T en the eyes or the crank-members are brought in line with the hearings on the sides'of the crank-case, and the ends otthe shaft secply-conductor and a c mmon tions l -b are insertedfrom opposite sides andsecured in the crahk-members by driving in the pins or keys Finally the top-flange on the crank-case is set against the bottom flange on the cylinder-body, and the two are secured together by the bolts, after the piston has been set into the. cylinder through the open lower end".

In the general'construction of the'cylinderbody and thecrank-case in ,thisengine'. the admissiomports and the exhaust-ports are arranged and disposed with a view. to allow two or more engines to be set closely together and connected with a commonsup ductor. .i-

The main exhaust-outlet on the top is These arms are suitably united, as by means of a connecting therefore provided with screw-threaded. coupling'sockets on opposite sides, and the supplementary exhaust 43 -43 beloware so placed asito be convenientlyconnected with wexhaustrpipes extending horizontally along the frame or truck on opposite sides of the cylinders; each cylinder-being suspended between the carrying-rods or bars 57 of the truck by the yokes 56 on the crank'case.

What I claim and desire to secure by Letters Patent, is

1. In a gas-engine, the combination of a cylinder having an exploding-ohalnber com- 'municating with the cylinder-space through a valve-controlled opening, means opera-ting to ope 1 the exploding-chamber to the cylinder-sp .ce when the cylinder is taking in gas and tr shut o'fi corninunication'of said chamber with the cylinder-space after the explosion of the charge, a valve-controlled exhaust- ]outl et leading from the exploding-chamber,

rneans operating to open the said chamber to the exhaust when said chamber is closed to the cylinder-space, and to close it to the exhaust when the cylinder-spaceis in communication with the said chamber, and a supplemental exhaust-outlet leading from the lower part of the cylinderspace and arranged to open said space to tle exhaust when the piston is at theendof its stroke after an explosion.

2. In a gas engine, an explosion-chamber in communication with the cylinder-space in front of the piston through a valve-controlled opening in the head of the cylinder, and having an exhaust-outlet; a controllingvalve to said outlet; means actuated from ;cylinder having an explodingw'hamber in Mt communication with the cylinder-space in front of the piston through a valve-controlled opening; a valve controlledexhaust-outlet leading out from said exploding-chamber; valveoperating means connected with said valves and adapted to simultaneously open one valveand close the. other, whereby the exhaust-outlet is closed when communicationis opened between the exploding-chamher and the cylinder-space, or the. exploding chamber is cut ofi' from the cylinder-space when the said chamber is o ened. to. the exhaust; a piston having de ecting-platesgon the piston-head and gas-inlet apertures in I the sides below the head, said apertures be ing arranged tn deliver the gas for the charge Within thespahe incloseduby the deflecting- -plates. x

44. In a gas engine, the combination of-al I cylinder having, an e fploding chan ber the controlling-valves between point of the stroke; gas-inlet ports in the sides of the cylinder so arranged as to be opened and closed to admit-and cutoff the gas at the end of the down-stroke and the beginning'of the upstroke of the piston; and means actuated from the piston actuated shaft for simultaneously operating the gate and thecexhaust valve of the explodingchamber.

i 5. In a gas engine, the combination, with the cylinder, of the exploding-chamber communicating with the cylinder-space above the pistonthrough a relatively narrow opening; an exhaust-outlet from the explodingchamber; a piston having gas-inlet ports j jthrough which gas is admitted from the cylinder-space below the piston into the cylindersp'ace above it; the defiectin plates on the piston-head adapted to con' ethe incoming gas and direct the bulk thereof into the exploding-chamber in the ascending stroke of the piston; and means operating the exploding-chamber and the cylinder-space and between the said chamber and theexhaust-outlet, whereby the said chamber constitutes a compressing and exploding-chamber when it is opened to the cylinder-space below, or an exhaust-chamber when exhaust'outletp it is-opened to the 16." Ina gasengine, the combination of the cylinder; the "exploding-chamber communieating with the I cylinder-space through a relatively narrow opening in the bottom of said chamber; the exhaust-outlet in the top of the chamber a downwardly-acting valve fitted to seat therein; a pivoted gate in the bottom] of the chamber; a link connecting the said gate and the exhaust-valve; and

-means for simultaneously operating said gate andvalve from the movements of the piston-actuated shaft to close one when the other is opened.

7. In a gas-engine, a cylinder having an, plodmg-chamber communlcatmg with the cy inder-space in front of the piston through an opening in the cylinder-head; a gate adalpted to close said opening; an exhaustout et from said chamber having a controlling valve; means connecting said gate and valve whereby one will be opened as the,other is be:

ing closed; and means for operating the ex.

, having .a closed are in communication with the cylinderspace; a crank-case removably secured to the lower end of the cylinder, and adapted to wholly contain and inclose the crank, the

space within the said case forming agas-contaming compartment in direct communication wlth the cylinder-space; in combination with'a tubular piston comprising a closed head and a cylindrical-body having admission-ports in the sides below the head so arranged as to register with the ports in the cylinder-body when the piston is. at that point in its stroke where the charge of -gas is to be admitted, and an exhaust-outlet from the cylinder-space through the sides of the cylinder, adapted to be uncovered by thepis ton in the descending stroke, and to be covered in the contrary movement of the piston, the said exhaust-outlet being so arranged with relation to the admission-ports that the exhaust will be uncovered during the first admission of the charge of gas into the cylinderspace for clearing out the dead gas, but will be covered by the piston in advance of the complete closing of the admission-ports.

9. In a gas-engine, a cylinder having gas-' containing compartments on the sides, an open lower end provided with a flange, and aremovable crank-case having a cylindrical to detachably united to the bottom of the cy inder by a flange, and a flattened body adapted to contain and wholly inclose the crank, the space within said case being in direct communication with the gas-containing compartments through the cylinder-space, and adapted in connection with said compartments to hold a body of gas in excess of the quantity required for the charge, admission-ports in the cylinder-body opening into said gas-holding s' ace, and a tubular piston ead, and provided with apertures in its sides below the head adapted'120 to register with the admission-ports at the end of the descending-stroke; the 'said admission being arranged to be uncovered and, thereby admit gas into the space inclosed-by the crank-case 1n the ascendmg stroke 0fthe piston.

10. In a gas engine, the combination of a cylinder having anexploding chamber communicating with the cylinder space, a valve or gate controlling the opening between the 1 2 said chamber and cylinder space, a valvebetween the exploding chamber and the 10 v controlled exhaust connection leading from cfi linder space, and to open the exhaust, after the ex loding chamber, means arran ed to t e explosion of a charge, and a supplemental contro the said valve to open the ex-p oding exhaust for the said cylinder-space.

.chamber to the cylinder space while the charge is being compressed and when the ex- GEORGE ADEIARD BEAUDET' plosion takes place, and at the same time to Wltnessesz close the said exhaust connection, and to op- L. M. FRANK,

erate the valve to close the communication EDWARD E. OSBORN. 

